Creasing-bar for box-machines.



J. E. ERICKSON.

CREASING BAR FOR BOX MACHINES.

APPLICATION FILED 17110.10. 1913.

Patented Dec. 1, 1914.

2 SHEETS-SHEET l.

Ewen/074' J05 2 15 7"??5'5077 THE NORRIS PETERS CO. FHOTO-LITH'Q. WASHINGTON. D. C.

J. E. ERIGKSON. ORBASING BAR FOR. BOX MACHINES.

APPLICATION FILED DBO. 10. 1913.

1, 119,074. Patented Dec.1,1914.

Z SHEETS-SHEET 2.

THE NnRRls PETFRS C0,. PHOTO-LITHO, WASHINGTON, D Cv i Box-Machines, of which the following is a NI E STATES PATENT OFFICE.

JoHn E; ERICKSON, on ST; PAUL, MINNESOTA.

CREASING-BAR FOR BOX-MACHINES.

To all whom it may concern:

Be it knownthatl, JOHNE. ERIGKSON, a a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Creasing-Bars for specification. My invention relates to creasing bars for box-machines ofthetype disclosed inmy Patent Number 1,058,165, dated April 8, 1913. a Y i It is the object of my invention to provide a creasingbar ofthis type which shall be simple and efficient, shall, be readily adjustable for different thicknesses of ,cardboards and different sizes; of crease and shall effect the creasing as desired without breaking the cardboard. j t p The full objects andadvantages of my invention will appearin connection with the detailed description thereof and are particularly pointed out in the claims; a

In the drawings, illustrating the application of my invention in one form,'Figure 1 is an end partial view of a box machine employing a creasing bar having my improvements. Fig. 2 is an enlarged sectional view taken through the upper and lower, creasing bar on line 22 of Fig. 1. Fig. 3 is a transverse se'ctionalxview on a'larger scale of the movable creaser member. Figs. 4and 5 are enlarged fragmentary details of the lower and'upper crea'sers. F 6'is asection on line 66 of Fig. 1. a a t As illustrated, a creaser frame 10 is slidably mounted'upon supports 11,12, along which it is adjustable by means of gears 13 engaging a segment14 operated'bya crank shaft 15. The oreaser frame proper is provided with upright portions 16 in which are shafts 17. Upon the shafts 17 are ec- 'centrics 18, from which is suspended by means of rods 19 the upper or movable creaser ha-r 20, which is operated by. the eccentrics 18. Springs21 aid in balancing the movement of the .creaser bar 20. All of the above parts may be constructed and operated in thefsame manner as the similar parts of my-said patent and form nopart of the invention herein claimed.

The creaser frame 10is provided with a fixed upper portion 22 and aeomplemental removable portion 23 so constructed and shaped in respect to one another as to leave when assembled a cavity or opening 24be- Specification of Letters Patent.

- means. of bolts. .29.

Patented Dec. 1, 1914.

Application filed December 10, 1913. Serial No. 805,742.

tween the same. The movable portion 23 is held in position means of bolts 25. Within the cavity 24 is a semi-cylindrical block or anvil 26 having on the end thereof a shaft 27 which extends through an opening in the upright 16 and is supported by bearing blocks 28 secured within said opening by The. shaft 27 has a squared end 30 adapted to be rotatedflby a crank, and said shaftfand the anvil 26'are secured in desiredposition by means of an feye-bolt 31 surroundingthe shaft dd p by a nut: 32.

The anvil 2c is four-sided, and s the several sides thereof are ribs 33, 34, 35 and 36, each successively of greater width.

These several. ribs are provided with a series of notches 37, through which extend guide wires 38 for the sheet of cardboard. fed through the machine. As clearly shown in Fig. 2, the anvil 26 is operatively positioned so that one of the ribs 33, 34, 35 or 36 is upwardly extended in a vertical plane central with respect'to the movable creaser bar 20. The fixed portion 22 of the lower creaser bar has thereon aseries of spring members 39 which normally engage the forward edge and under side of the cardboard as the same is fed forwardly and lift the cardboardover the rib, the feeding being effected by intermittently.ope'rated gearing 40, 41. The spring members 39 will of course yield during the creasing operation and permit the movable creaserbar to creasing action on the anvil.

As best shown 'n'Figf2, the creaser bar I engage and effect 20 comprises a lower projecting portion 42 which is in the plane of theupper rib of the anvil. A pair of oreaser plates .43 44 are secured to bar 20 so as to have freedom for lateral movement by means of hinge-like or flexible fasteningmembers 45 which are bolted directly to the bar 20. The position of the lower ends of the creaser plates 33 and 34 with respect to one another and the extent of openingbetweenthe same are controlled by restraining bars 46, 47. These] bars are. carried by sets of hangers 48 on each side of the creaser bar 20 to which they are secured by bolts 49. The hangers 48 are provided with guideways 5O in-which the bars 46*and '47 slide. These guideways is are formed with wedge-shaped backs 51, as

best shown in dotted lines in Fig. 5, and the rods 46 and 47 are provided with inwardly beveled faces 52 cooperating with said therefore that if the rods 46 and 47 are moved longitudinally said rods will be given a lateral displacement by reason of the co-- action of the engaging beveled surfaces 51 and 52. Movement of the rods 46v and 47 will therefore vary the opening between the creaser plates 43 and 44. This movement is effected by a lever 53 pivoted at 55 to a bracket 54 extended from the end of bar 20. The lever 53 is bifurcated so as to straddle the bracket 54 providing depending arms '56 and 57 to which are'pivotally connected the ends of bars 46 and 47, respectively. The lever 53, and the bars 46 and 47 operated thereby, is held in adjusted position by means of aco'tter pin 58 and an arc member 59 secured to the bracket 54. In place of "the cotter pin and .member 59, the usual pawl and ratchet locking device maybe employed if desired. H

In operation, the cardboard 60 to be oper- 7 'ated upon is fed into the proper position over the anvil 26 supported by the stationarycreaser member 10, the cardboard being guided above" the rib 33 by means of the spring fingers 39. The adjustment of the creasing plates 43, 44 will be made to correspond with'the particular rib 33, 34, 35 or 36' with which said plates are to cooperate, and the distance between the ends of the plates will always be greater than the width of the rib employedto permit the thickness of cardboard to be turned down around the rib. A.s the bar is oscillated by means of the eccentrics-18 the creaser plates 43 and 44 are respectively caused to engage the cardboard 60 and force the same (1OWI1IOV81 the particular-rib which is used The cardboard 60 is free to move and as the crease is formed the'p'lates 43 and 44 draw the material of the cardboard up i againstthe rib 33 on each side thereof forming a perfect crease while not breaking or otherwise damaging the main texture of the cardboard.

I claim:

1. A creaser for cardboard comprising a relatively fixed creasing member having a creasing rib, means for guiding cardboard to said fixed member, movable means for engaging the cardboard and forcing the same upon the rib to form a crease, and spring fingers'having their free ends extended above said rib for guiding and holding the cardboard in position to be acted upon by the movable member and for with- I drawing the cardboard from said rib after the crease is formed. H I 2. 'A creaser for cardboard coinprlslng an anvilhaving a plane surface and a rib extending above said surface, a movable creaser bar having a V-shaped head and an edge of each plate in engagement' with the shoulder and draw the plates outwardly from the V-shaped head, and means for limiting outward movement of the plates.

A creaser for cardboard comprising a relatively fixed support, "a "movable anvil carried by said support and provided with a plurality of creasing ribs of different sizes, means for positioning said anvil to render any desired rib operative, a movable creaser bar having plates adapted to engage the cardboard at each vside of the operatively positioned rib, and means for adjusting the plates for cooperation with the respective differentrsized ribs. 7

4. A creaser for cardboard comprising a relatively fixed creaser member having a creasing rib, a plurality of spring fingers secured to the fixed member having their free ends extended in the direction of movement of the cardboard and curved so that a portion only of said fingers extends above the top plane of the rib for guiding and hold and below the top plane of said rib, and

a plurality of spring fingers secured to "the fixed member and having a curved portion extendingfrom below the plane of said guide wires toa point above the plane of the top of said ribs for guiding and' holdmg the cardboard above said rib, and movable means for' engaging the cardboard and forcing the same upon the rib to form a crease.

6. A creaser for cardboardjcomprising a fixed support, a rotatable anvil mounted said support provided with a plurality of creasing ribs of different sizes, a shaft connect'ed with said anvil, a hand crank on said shaft for rotating said anvil to render any desired rib operative, means for looking the anvil in position, and a movable creaser bar cooperating With said operative creasing rib.

ln'testimony whereof I aflix my signa-.'

ture inpresence of two Witnesses.

' JOHN E. ERICKSON. Witnesses:

F. A. WI-IITELEY, H. A. BOWMAN.

7 Copies of this patent-may be obtained for five cents each, by addressing the Commissioner of :Patents,

Washington, 2D; 0.' 

